You are a certified medical assistant working for an Internist. A 20-year-old patient presents with a chief complaint of a small, painless lump in his lower left neck. He reports experiencing increasing fatigue and a 10-pound weight loss over the past six months, attributing it to "working and studying too hard."

Describe your expected actions and findings related to the following subjective and objective data:

Subjective: The patient reports a small lump on his neck, along with increasing fatigue and a 10-pound weight loss over the past six months.

Objective: Vital signs show a heart rate of 103, blood pressure of 122/65, oxygen saturation of 97% on room air, and a respiratory rate of 16. Laboratory results reveal an increased number of white blood cells and decreased red blood cells.

What disorder do you suspect the patient is suffering from? Explain the identifying symptoms, possible causes, and common treatments. What medications and/or procedures might the patient require and why? What role would you, as the medical assistant, play in the care for this patient?